Bengeworth Road

To deliver the LPT project, we need to provide a new connection for UK Power Network’s existing site on Bengeworth Road in Lambeth, South London – you may recall we did some initial survey works last summer to test ground conditions at the site in preparation for this.

We have a legal obligation to connect companies like UK Power Networks to our network and to achieve this we need to build a shaft at Bengeworth Road to connect to the main tunnel. In early 2021 we will need to prepare the site for the tunnelling works which are due to start in the second half of 2021, and once complete (likely in 2022), we will build a new substation and headhouse on the site in 2023 and 2024. All works are essential to help meet electricity demand in Central and South London.

By doing this work now as part of the tunnelling project, overall disruption will be minimised as UK Power Networks will not need to replace their existing cables which currently run beneath the local road network. We plan to build the substation, head house and associated works under permitted development rights as the existing site is operational and we have been working closely with the London Borough of Lambeth to share details of our plans. Please be assured we will do all we can to minimise disruption and keep you informed.

Working hours

For works above ground, our usual working hours will be Monday to Friday 8am to 6pm and Saturday 8am to 1pm. 24-hour working, seven days a week, will be required while we build the shaft and carry out tunnelling works over the course of summer 2021 – summer 2022. During the night, our works will largely take place below ground.

Construction traffic

Whilst at peak we could have up to 120 Heavy Goods Vehicle (HGV) movements a day, though we anticipate that the average over the course of the peak period will be closer to 80 movements. This is likely to be the case between summer 2021 – summer 2022. We know that this will be a change for local residents and will do everything we can to minimise disruption:

  • We will avoid construction vehicles entering and leaving the site at peak times
  • Only vehicles notified in advance will be allowed on to site. All construction and managerial parking will be provided onsite to avoid any queuing or parking on residential streets
  • Traffic marshals will be prominent at all times during construction operations to control construction vehicle movements, in order to maintain safety of residents and other road users, in particular cyclists using Cambria Road. At the moment we are considering traffic marshals at the junction of Bengeworth Road and Cambria Road and at the junction of Southwell Road and Cambria Road
  • Minimise any impact to cycle routes by working with the Council, as part of this we will install appropriate road signs warning cyclists of the site access and of construction HGVs turning in and out of the site


  • March – June 2020: Initial survey works took place
  • August – October 2020: Ground investigation works took place
  • First half of 2021: Preperatory works and site set up
  • Second half of 2021: Tunnelling works begin
  • 2022: Tunnelling works complete
  • 2023 – 2025: Substation and headhouse construction
  • 2026: Bengeworth road site development complete

Community relations

We are committed to keeping the local community informed about our plans. Over December 2020 and January 2021 we held three public engagement events with local residents, the minutes of the January meeting and the presentation from the meeting can be found here.

We are in the process of setting up a Community Liaison Group so that we can work closely with local residents. If you would like to join this group, please contact the community relations team via the details below.

Get in touch

If you would like to discuss the project in greater detail or have any questions, please contact our community relations team using the details below:

Call our Freephone helpline number: 0800 783 2855 (lines open 9am to 5pm, Monday to Friday)


Follow us on Twitter: @NGLPT